Did you glue your carpet down?

[Skunksmash]

I'm unhappy with my new carpet from AAC. It looks good and seems to be of high quality, but I can't seem to get all the... humps out. There are little places here and there where you can tell the carpet is standing up off the cab floor. Don't like it. Looks bad. I was told not to glue it down or I'd regret it when it came time to take it out of there. But looking at so many of you guys' pics, it looks like your carpet conforms perfectly to the floor. Don't know what I did wrong.